test-review

test-review is a skill for Claude Code, Codex from sd0xdev/sd0x-harness. It costs 56 tokens per session (2,601 once invoked), scanned A, original, MIT.

A test-quality review tool that examines tests alongside their source code and reports whether important behavior is covered. Test coverage describes which parts of a program are exercised by tests.

In plain words
What is it for?
Use it to review test sufficiency, assess coverage gaps, and generate unit tests for missing cases.
Why use it?
It exposes missing test cases and weak coverage before they allow defects to pass unnoticed.

Skill for Claude CodeCodex

Part of the sd0x-dev-flow plugin — 98 skills, 16 agents, 5 hooks shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/sd0xdev/sd0x-harness/test-review
Any agent
npx skills add sd0xdev/sd0x-harness --skill test-review
Clone the repo
git clone --depth 1 https://github.com/sd0xdev/sd0x-harness

Made for: Claude Code, Codex.

Or install sd0x-dev-flow, the plugin that ships this one along with the rest of its 98 skills, 16 agents, 5 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for test-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/sd0xdev/sd0x-harness/test-review.svg)](https://agentmods.dev/skills/sd0xdev/sd0x-harness/test-review)
Your own site
<a href="https://agentmods.dev/skills/sd0xdev/sd0x-harness/test-review"><img src="https://agentmods.dev/badge/skills/sd0xdev/sd0x-harness/test-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,601 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00056 $0.02601
Opus 5 $0.00028 $0.01300
Sonnet 5 $0.00011 $0.00520
Haiku 4.5 $0.00006 $0.00260

Measured yesterday against content hash 0c94333b397d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

test-review scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/test-review/SKILL.md · 227 lines

How it starts

The opening of the file, as written. The whole thing — 227 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Test Review Skill

Trigger

  • Keywords: test coverage, test review, are tests sufficient, generate tests, test gen, coverage

When NOT to Use

  • Code review (use codex-code-review)
  • Document review (use doc-review)
  • Just want to run tests (use /verify)

Commands

Command Description Use Case
/codex-test-review Review test sufficiency Required
/codex-test-gen Generate unit tests Add missing tests
/check-coverage Test coverage analysis After feature dev

Workflow: /codex-test-review

Smart detect target → Read test + source → Codex review (5 dimensions) → Coverage assessment + Gate → Loop if Needs additions

Step 1: Smart Detection

Input Behavior
File path Review that file directly
Directory Review all tests in directory
Description Auto-find related test files
Module name Search related test files
No parameter Auto-detect from git diff

Step 2: Read Test and Source

  • Read test file (TEST_FILE)
  • Read corresponding source (SOURCE_FILE, inferred from test path)

Step 3: Codex Review

First review: mcp__codex__codex with test review prompt. See references/codex-prompt-test-review.md.

Loop review: mcp__codex__codex-reply with re-review template. See references/codex-prompt-test-review.md. Rotation applies per the central contract (see § Review Loop below).

Codex unavailable → fallback carries the gate (@rules/auto-loop.md § Review Dispatch): decide via scripts/lib/review-dispatch.js (contract:'test:coverage'), record [REVIEWER_FALLBACK], dispatch contract-neutral-reviewer via Task with references/codex-prompt-test-review.md as the governing template (P3 = one retry, fresh instance), and validate the raw report with node scripts/validate-family-sentinel.js test:coverage before adopting the verdict. Carriers exhausted → no gate sentinel, behaviour-layer ⚠️ Need Human.

Read the full file on GitHub · 227 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 227 lines · 56 tokens per session scan A 0c94333b397d

Subscribe to this mod's changes

test-review is a skill published in the GitHub repository sd0xdev/sd0x-harness (188 stars, last pushed yesterday), licensed MIT. It adds 56 tokens to every session and 2,601 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

Related

Other skills, from other repositories

cc10x-router

THE ONLY ENTRY POINT FOR CC10X. Activate this skill for build, debug, review, and plan requests. Use when the user asks to implement, fix, review, plan, test, refactor, or continue code work. Trigger keywords: build, implement, create, write, add, review, audit, debug, fix, error, bug, broken, plan, design, architect…

romiluz13/cc10x · 125 tokens

building

Implementation skill for writing production code with TDD. Covers the RED-GREEN-REFACTOR cycle, false-RED detection, vertical slicing, scope escalation, test process discipline, and code generation patterns. Loaded by component-builder and bug-investigator.

romiluz13/cc10x · 53 tokens

diff-driven-docs

Use when a BUILD phase completes, a commit is staged, or a PR is about to be created, and the diff has not yet been reflected in documentation. Also use when the user says "update docs", "sync docs", "document this", or asks whether documentation is up to date.

romiluz13/cc10x · 64 tokens

exploration

Two-mode exploration skill: (1) design dialogue — turn rough ideas into validated designs through collaborative interview before planning; (2) spike — throwaway code answering ONE design question, deleted or absorbed, never shipped. Router invokes mode via dispatch context.

romiluz13/cc10x · 56 tokens

memory-and-handoff

Two-mode skill: (1) session memory — load/persist durable workflow state under .cc10x/ (activeContext, patterns, progress) so context survives compaction; (2) handoff package — portable, secrets-redacted export for a coworker, different tool, or fresh non-cc10x session.

romiluz13/cc10x · 70 tokens

plan-review-gate

Use after saving a non-trivial plan or decision RFC when a fail-closed feasibility, completeness, and alignment review must block execution.

romiluz13/cc10x · 32 tokens